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Air Cleaner Cup - Rust Repair
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wjohn View Drop Down
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Joined: 19 Jan 2010
Location: KS
Points: 2092 		Post Options Post Options   Thanks (0) Thanks(0)   Quote wjohn Quote  Post ReplyReply Direct Link To This Post Topic: Air Cleaner Cup - Rust Repair
    Posted: 10 Mar 2025 at 6:14pm
What's the best way to repair the air cleaner cups that are retained by a bail (like on the WD and WD-45)?

I have two that have pin holes in them from water. I cleaned them up well and was going to JB Weld them, but I got to thinking that my not hold up well with the bail pulling up on the bottom of the cup and putting pressure on the cup. Then repeat (untension/retension) every time you want to change the oil. I wouldn't think twice about it for a B/C/CA clamp style air cleaner cup that doesn't have any stress on it.

Solder? Braze? Or am I overthinking it and JB weld is just fine?
1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45
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DiyDave View Drop Down
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Joined: 11 Sep 2009
Location: Gambrills, MD
Points: 52928 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DiyDave Quote  Post ReplyReply Direct Link To This Post Posted: 10 Mar 2025 at 8:31pm
On the bright side, JB weld will melt out when you heat to braze...Wink
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55allis View Drop Down
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Joined: 30 Jun 2020
Location: Griswold Iowa
Points: 827 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 55allis Quote  Post ReplyReply Direct Link To This Post Posted: 10 Mar 2025 at 9:24pm
I’d think that if you could get the JB Weld to squeeze out the pin holes that it would hold…
Otherwise you could put some silicone/ gasket maker in them..
1955 AC WD45 diesel with D262 repower, 1949 AC WD45
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 21112 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 6:08am
Oil resistant RTV silicone on the inside AFTER cleaning the cup well with brake Kleen. Let cure for a couple of days before using.
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IBWD MIke View Drop Down
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Joined: 08 Apr 2012
Location: Newton Ia.
Points: 3888 		Post Options Post Options   Thanks (0) Thanks(0)   Quote IBWD MIke Quote  Post ReplyReply Direct Link To This Post Posted: 23 hours 10 minutes ago at 9:01am
I'd braze it, but then I like to braze. I wouldn't think it would be hard to find a good used one? Pretty sure I've got a few out in the parts vault and Lon probably has 20-30, if he can find them after the move.

Pretty sure as I think about things there is a WD style cleaner that the main body is damaged but the cup is fine out there. I'd give you the cup, when do you need it? Could bring it to Hutch or possibly ship it?
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wjohn View Drop Down
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Joined: 19 Jan 2010
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Points: 2092 		Post Options Post Options   Thanks (0) Thanks(0)   Quote wjohn Quote  Post ReplyReply Direct Link To This Post Posted: 10 hours 53 minutes ago at 9:18pm
Sounds like silicone sealant it is. That should stay fairly flexible. Thanks!
1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45
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wjohn View Drop Down
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Joined: 19 Jan 2010
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Points: 2092 		Post Options Post Options   Thanks (0) Thanks(0)   Quote wjohn Quote  Post ReplyReply Direct Link To This Post Posted: 10 hours 41 minutes ago at 9:30pm
Originally posted by IBWD MIke IBWD MIke wrote:

I'd braze it, but then I like to braze. I wouldn't think it would be hard to find a good used one? Pretty sure I've got a few out in the parts vault and Lon probably has 20-30, if he can find them after the move.

Pretty sure as I think about things there is a WD style cleaner that the main body is damaged but the cup is fine out there. I'd give you the cup, when do you need it? Could bring it to Hutch or possibly ship it?

I have never brazed anything in my life, but I need to learn. I also need this tractor running so I'll probably just silicone the cup for now and carry on until I have more time. Way overkill, but I did pick up an oxyactyelene torch setup a couple weeks back, finally!

And thank you very much for the offer on the cup. Your comment prompted me to look at the parts book... For some reason I had in my head that the WD and WD45 air cleaners are different, which they are, but it looks like the cups are the same (however the baffles are different for some reason? Oil level, maybe?). I have a couple of stuck WDs that sure won't be needing their cups anytime soon. I had thought the air cleaners were actually different diameter but apparently not.
1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 21112 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 9 hours 44 minutes ago at 10:27pm
Only difference is the carb hose is larger on the 45 air cleaner body.
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Lon(MN) View Drop Down
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Joined: 11 Sep 2009
Location: Merrill Wi
Points: 1994 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Lon(MN) Quote  Post ReplyReply Direct Link To This Post Posted: 1 hour 44 minutes ago at 6:27am
I don't have any WD/WC air cleaners left. I kept a couple WD45s and have them on the shelf. I have used JB weld on some B/C cups with success.
http://lonsallischalmers.com
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